已知两个数列A和B且满足B=a1 2a2 3a3 naN/1 2 3 n,若B是等差数列，证明A也是等差数列？已知两个数列A和B且满足B=a1+2a2+3a3+ +naN/1+2+3+ +n,若B是等差数列，证明A也是等差数列？
热心网友
晕数学
热心网友
晕
已知两个数列A和B且满足B=a1 2a2 3a3 naN/1 2 3 n,若B是等差数列，证明A也是等差数列？已知两个数列A和B且满足B=a1+2a2+3a3+ +naN/1+2+3+ +n,若B是等差数列，证明A也是等差数列？
晕数学
晕